diff --git a/app/Classes/Modules/Transactions/Processors/CreateInvoiceTransactionProcessor.php b/app/Classes/Modules/Transactions/Processors/CreateInvoiceTransactionProcessor.php
index 015c018f..cac7fc7b 100644
--- a/app/Classes/Modules/Transactions/Processors/CreateInvoiceTransactionProcessor.php
+++ b/app/Classes/Modules/Transactions/Processors/CreateInvoiceTransactionProcessor.php
@@ -136,6 +136,7 @@ class CreateInvoiceTransactionProcessor
         $warehouseId = $order->orderRoles()->where('role_id', OrderRoleTypes::ORIGIN_WAREHOUSE)->first()->company_module_id;
         $selected_warehouse_rate = $this->getConstantByKey($warehouse_rate_constant, $warehouseId);
 
+        $warehouse_rate = 0;
         if (is_object($selected_warehouse_rate)) {
             $warehouse_rate = $selected_warehouse_rate->amount;
         } elseif (is_array($selected_warehouse_rate)) {